Trivia: Rick Baker, the special make up effects artist, appears as the alien with an exposed cranium at Z's funeral. (00:08:25)
Trivia: Rip Torn did not reprise his role of MIB director "Zed" in this third film due to legal issues stemming from a 2010 arrest. Despite not reprising the role, however, there are some unconfirmed reports Torn appears in a cameo as one of the aliens in the background of Zed's funeral, albeit under heavy makeup.
Trivia: Makeup effects artist Rick Baker has confirmed that during the film, particularly during the Coney Island scene, there are aliens hidden in the background of many shots and extras with subtle alien makeup effects added, in order to emphasize the fact that aliens had been integrated into New York City's population very subtly. Many of them require careful observation, or even going frame-by-frame to notice.